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Claude Opus 4.8 vs GPT 4o

At a glance

Anthropic's most capable Opus yet, built for long-horizon autonomous agents and frontier coding.

891M ctx$5.00/$25.00 per M#4/92

OpenAI's original omni model supporting text and image inputs.

63128K ctx$2.50/$10.00 per M#64/92
Demos
All demos

No shared demos for these models yet.

AI Output
All AI outputs

No captured outputs for these models yet.

Benchmarks
See rankings
Reasoning
AgenticInsufficient data
Sources:Epoch ECI·Epoch AI·Provider·OpenRouter· as of 2026-07-10
Smarter42%
Capability
CapabilityECI42%89.2
Reasoning & Knowledge
Graduate Science85%91.0%Expert-Level—Factual Recall39.5%
Math
Math Problems—Competition Math1439%98.3%Research Math13600%47.2%
Coding
Real-World Coding186%88.6%Code Editing—
Agentic
Novel Reasoning72.1%Task Horizon—
AgenticInsufficient data
Sources:Epoch ECI·Epoch AI·OpenRouter· as of 2026-07-10
Cheaper56%
Capability
CapabilityECI63.0
Reasoning & Knowledge
Graduate Science49.2%Expert-Level2.7%Factual Recall—
Math
Math Problems53.3%Competition Math6.4%Research Math0.3%
Coding
Real-World Coding31.0%Code Editing23.1%
Agentic
Novel Reasoning—Task Horizon9min
Specs
1M
Context
128K
Max output
May 2026
Released
128K
Context
16K
Max output
May 2024
Released
Capabilities
Vision
Audio
Reasoning
Vision
Audio
Reasoning
Pricing
Live pricing, shown before you run
Input$5.00/M tokens
Output$25.00/M tokens
Cache read60%$0.50/M tokens
Cache write$6.25/M tokens
Web search$0.01/search
Live pricing, shown before you run
Input50%$2.50/M tokens
Output60%$10.00/M tokens
Cache read$1.25/M tokens
Chat with Claude Opus 4.8Go to model
Chat with GPT 4oGo to model
Frequently Asked Questions: Claude Opus 4.8 vs GPT 4o▼

Which is better, Claude Opus 4.8 or GPT 4o?

▼

Based on the Capability Index, Claude Opus 4.8 scores higher (89.2 vs 63.0). However, "better" depends on your use case — pricing, speed, context window, and specific capability needs all matter.

Which is cheaper, Claude Opus 4.8 or GPT 4o?

▼

GPT 4o has a lower blended cost. Claude Opus 4.8: $5.00 input / $25.00 output. GPT 4o: $2.50 input / $10.00 output.

Which has a larger context window, Claude Opus 4.8 or GPT 4o?

▼

Claude Opus 4.8 has a larger context window: Claude Opus 4.8 supports 1M tokens vs GPT 4o at 128K tokens.

Do both Claude Opus 4.8 and GPT 4o support vision?

▼

Yes, both Claude Opus 4.8 and GPT 4o support vision/image input.

Which has better coding performance, Claude Opus 4.8 or GPT 4o?

▼

Claude Opus 4.8 scores higher on SWE-bench Verified: Claude Opus 4.8 resolves 89% vs GPT 4o at 31%.

What are the key differences between Claude Opus 4.8 and GPT 4o?

▼

Key differences: Claude Opus 4.8 has a notably higher capability index (26.2 point gap); only Claude Opus 4.8 offers extended reasoning mode. Compare full specs on this page.

Which model should I choose for my use case?

▼

If cost is your priority, choose the cheaper option. If you need the highest intelligence for complex tasks, pick the higher-scoring model. For long documents or codebases, choose the larger context window. You can try both Claude Opus 4.8 and GPT 4o for free on idapt.app to see which performs better for your specific needs.

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